Nut-lock



(No Model.)

' A. J. GUNN.

NUT LOCK.

No. 405,773. Patented June 25, 1889.

qwi/cwaooao avw'ewboz gwwgflm Wigwam UNITED STATES PATENT OFFICE.

ANDREV JACKSON GUNN, OF VALLEY FALLS, KANSAS.

NUT-L OCK.

SPECIFICATION forming part of Letters Patent N 0. 405,773, dated June 25, 1889.

Application filed October 3, 1888.

To all whom it may concern:

Be it known that 1, ANDREW JACKSON GUNN, a citizen of the United States, residing at Valley Falls, in the county of Jefferson and State of Kansas, have invented new and useful Improvements in Nut-Locks, of which the following is a specification.

The invention relates to improvements in nut-locks; and it consists in the construction and novel combination of parts hereinafter described, illustrated in the accompanying drawings, and pointed out in the appended claim.

Figure 1 of the drawings represents aperspective View of a nut-lock embodying the invention. Fig. 2 represents a perspective View of the washer or locking-plate detached. Fig. 3 represents a face view of the beam on which the nut is locked.

Referring to the drawings by letter, A designates a beam having a suitable bolt-openin g and a shallow recess a surrounding the same.

a is a pin-recess situated in the recess to immediately adjoining the edge thereof.

B is a bolt, and C a nut, both of ordinary construction.

D is a locking plate or washer, having any contour except a circular one, but preferably having an angular form, such as a square, hexagon, or octagon. In one edge of the locking-plate is a notch E,preferably semicircular in shape and immediately overlying the pinrecess a. The said locking-plate has a suitable bolt-opening and fits accurately in the shallow recess a, which conforms in shape to and forms a seat for it.

The edge portion F of the locking-plate on Serial No. 287,059. (No model.).

the proper side of the notch E is curved slightly outward, as shown, so that when the nut is screwed up its inner face will move thereover; but it cannot be unscrewed, because the corner of the detent edge F adjoining the notch E will spring up against the edge of the nut. The said corner is bent farther outward than the rest of the edge F, and the nut will ride thereover when being screwed G is a metal pin, which, when the nut is screwed up, can be inserted in the notch E and recess a, and by resting against the side of the nut will aid in locking the latter in place.

The washer will make its own recess in soft wood when the nut is screwed well up.

The device is simple and durable and efficient, and will lock itself when the nut is screwed up.

Having described my invention, I claim In a nut-lock, the combination, with a bolt and nut of ordinary construction, of the beam A, having the shallow recess a and the pinrecess a therein, the locking-plate D, having the notch E in its edge registering with the recess a and the detent edge F adjoining said notch, and the pin G, inserted in the notch E and recess a and standing against the side of the nut, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

ANDRENV JACKSON GUNN.

IVitnesses:

Louis A. MYERS, ALBERT BELAND. 

